Tips for 5300 Series Urethanes

5300 Chemical Resistant Urethane

Heat Blisters:
5300 series can get bubbles or blisters if applied in extreme heat. Just be sure to apply in cooler times of the day or switch to one of our other sealers that do not show this problem.
Coating Over Concrete
5300 is an industrial grade chemical resistant that has great flow and leveling however it should not be applied direct to concrete. Be sure to use a primer suited for concrete before use.
Coating Large Areas
For large with widths of more than 30 feet it is best to maintain a wet edge by having 1 squeegee operator per 30 feet and 1 backroller per 60 feet of width. Also have a 1 mixing operator for every 3 squeegee operators. The idea is to start at one end of the facility and have all squeegee operators spread the material towards the other end while they are all working in infusion with each other to maintain the wet edge. Then the backrollers are following behind them on cleats back rolling the squeegeed material to a uniform level. Always plan starting and stopping points to be at joints in the concrete.
Pot Life:
As is the case with most epoxy's, it is very important to keep the material cool and also to get it out onto the floor before it starts to exotherm (get hot and start to set up). Pour out the material into bands onto the floor and then begin spreading the material.
Accelerating:
Use 53 accelerator to increase the set time in cold environments. at 50 degrees 1 accelerator will cause the material to dry as if it were 70 degrees, use 2 accelerators at 40 degrees. Do not use accelerators to shorten the set time so the job can be done faster because this can decrease the adhesion and MVE protection.